| NoSo and NoS pi detection as a function of masker bandwidth in normal-hearing and cochlear-impaired listeners. | |
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MedLine Citation:
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PMID: 2341676 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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NoSo and NoS pi detection thresholds for a 500-Hz pure-tone signal were measured as a function of masking noise bandwidth in normal-hearing and cochlear hearing-impaired subjects. NoSo and NoS pi critical bands were derived from the bandlimited noise functions. A notched noise measure of the monaural critical band was also obtained for each ear. One hypothesis tested was that an asymmetrical monaural critical band would result in a relatively steep improvement of the NoS pi detection threshold as a function of decreasing masker bandwidth and would, therefore, be associated with a wider binaural critical band. This was hypothesized because the outputs of the left and right auditory filters would be more decorrelated the greater the interaural difference in the monaural critical band. However, as the noise bandwidth was narrowed, the decorrelation would lessen, resulting in a relatively steep improvement in NoS pi detection. Results indicated that the masking level difference (MLD) was smaller and that the monaural critical bands were generally wider in cochlear-impaired listeners. NoSo and NoS pi critical bands were somewhat larger in the cochlear hearing-impaired listeners having relatively wide monaural critical bands. There was a significant correlation between monaural critical band asymmetry and the NoS pi critical band; however, this correlation was insignificant when a control was employed for the critical band in the worse ear. Therefore, the present results did not support a strong association between monaural critical band asymmetry and the width of the NoS pi critical band. |
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Authors:
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J G Staffel; J W Hall; J H Grose; H C Pillsbury |
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Publication Detail:
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Type: Journal Article; Research Support, U.S. Gov't, P.H.S. |
Journal Detail:
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Title: The Journal of the Acoustical Society of America Volume: 87 ISSN: 0001-4966 ISO Abbreviation: J. Acoust. Soc. Am. Publication Date: 1990 Apr |
Date Detail:
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Created Date: 1990-06-27 Completed Date: 1990-06-27 Revised Date: 2007-11-15 |
Medline Journal Info:
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Nlm Unique ID: 7503051 Medline TA: J Acoust Soc Am Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 1720-7 Citation Subset: IM |
Affiliation:
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Division of Otolaryngology/Head & Neck Surgery, University of North Carolina Medical School, Chapel Hill 27514. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Attention* Auditory Threshold* Dichotic Listening Tests Dominance, Cerebral Hearing Loss, Sensorineural / diagnosis* Humans Loudness Perception Meniere Disease / diagnosis Perceptual Masking* Pitch Discrimination* Psychoacoustics Reference Values |
| Grant Support | |
ID/Acronym/Agency:
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NS24908/NS/NINDS NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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